Google defines its AdSense program as a fast and easy way for website publishers of all sizes to display relevant Google ads on their website's content pages and earn money"
Let's have an in depth look at each important word in this definition:
<script type="text/javascript">
<!-- google_ad_client = "pub-5749064175950234";
google_ad_width = 300;
google_ad_height = 250;
google_ad_format = "300x250_as";
google_ad_type = "text_image";
google_ad_channel = "";
//-->
</script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
Which will display something like the following block depending on your website's content :
This sentence refers to websites and blogs. This is important because some other advertising programs won't accept you as a publisher unless you have a website (not a blog) and a minimum size very few personal websites will ever reach (500.000 monthly pages views for example).
Moreover, AdSense isn't only suitable for blogs and small personal websites, it has been designed with small size publishers in mind which I find is a very good choice because this segment had no real alternative.
Now that you have understood that AdSense is a great advertising program, why would you give Google space on your pages to display its ads? The answer is obvious : Google pays you every time someone CLICK on one of the ads you show. This is why AdSense is called a "Pay Per click" program. If you haven't implemented AdSense on your website / blog yet, I can imagine how excited you are about this program ! And you are absolutely right. AdSense will change the way you see the web. Let's see how you can start making money with adsense right now.